EA025907B1 - Металлургический состав для производства феррохрома - Google Patents
Металлургический состав для производства феррохрома Download PDFInfo
- Publication number
- EA025907B1 EA025907B1 EA201490607A EA201490607A EA025907B1 EA 025907 B1 EA025907 B1 EA 025907B1 EA 201490607 A EA201490607 A EA 201490607A EA 201490607 A EA201490607 A EA 201490607A EA 025907 B1 EA025907 B1 EA 025907B1
- Authority
- EA
- Eurasian Patent Office
- Prior art keywords
- pellets
- mixture
- sintering
- production
- silicon carbide
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 68
- 239000000203 mixture Substances 0.000 title claims description 129
- 229910000604 Ferrochrome Inorganic materials 0.000 title abstract description 11
- 239000008188 pellet Substances 0.000 claims abstract description 223
- 238000005245 sintering Methods 0.000 claims abstract description 88
- 238000000034 method Methods 0.000 claims abstract description 53
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 44
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 44
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 39
- 150000002815 nickel Chemical class 0.000 claims abstract description 38
- 238000002156 mixing Methods 0.000 claims abstract description 14
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 12
- 239000000956 alloy Substances 0.000 claims abstract description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 39
- 229910052799 carbon Inorganic materials 0.000 claims description 39
- 239000000463 material Substances 0.000 claims description 39
- 238000002844 melting Methods 0.000 claims description 38
- 230000008018 melting Effects 0.000 claims description 38
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000011068 loading method Methods 0.000 claims description 8
- 239000011230 binding agent Substances 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 38
- 238000003723 Smelting Methods 0.000 abstract description 28
- 239000007858 starting material Substances 0.000 abstract description 9
- 239000003575 carbonaceous material Substances 0.000 abstract 1
- 239000000571 coke Substances 0.000 description 28
- 239000007789 gas Substances 0.000 description 22
- 239000002245 particle Substances 0.000 description 20
- 238000000227 grinding Methods 0.000 description 17
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 229910000278 bentonite Inorganic materials 0.000 description 14
- 239000000440 bentonite Substances 0.000 description 14
- 229910052751 metal Inorganic materials 0.000 description 14
- 239000002184 metal Substances 0.000 description 14
- 238000009826 distribution Methods 0.000 description 13
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 12
- 239000011044 quartzite Substances 0.000 description 12
- 229910052804 chromium Inorganic materials 0.000 description 11
- 239000011651 chromium Substances 0.000 description 11
- 238000001816 cooling Methods 0.000 description 11
- 229910052708 sodium Inorganic materials 0.000 description 11
- 239000011734 sodium Substances 0.000 description 11
- -1 sodium activated calcium Chemical class 0.000 description 11
- 229910000281 calcium bentonite Inorganic materials 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 9
- BFDHFSHZJLFAMC-UHFFFAOYSA-L nickel(ii) hydroxide Chemical compound [OH-].[OH-].[Ni+2] BFDHFSHZJLFAMC-UHFFFAOYSA-L 0.000 description 9
- 239000010802 sludge Substances 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 8
- 239000003830 anthracite Substances 0.000 description 8
- 239000012065 filter cake Substances 0.000 description 8
- 239000002893 slag Substances 0.000 description 8
- 239000000654 additive Substances 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 7
- 229910052742 iron Inorganic materials 0.000 description 7
- 229910000480 nickel oxide Inorganic materials 0.000 description 7
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 7
- 239000002994 raw material Substances 0.000 description 7
- 229910021532 Calcite Inorganic materials 0.000 description 6
- 229910000990 Ni alloy Inorganic materials 0.000 description 6
- 239000003245 coal Substances 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 238000001035 drying Methods 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 4
- 239000012141 concentrate Substances 0.000 description 4
- 238000001465 metallisation Methods 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000008247 solid mixture Substances 0.000 description 4
- 235000019738 Limestone Nutrition 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000010459 dolomite Substances 0.000 description 3
- 229910000514 dolomite Inorganic materials 0.000 description 3
- 229910052738 indium Inorganic materials 0.000 description 3
- 239000006028 limestone Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- WWNBZGLDODTKEM-UHFFFAOYSA-N sulfanylidenenickel Chemical compound [Ni]=S WWNBZGLDODTKEM-UHFFFAOYSA-N 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000000112 cooling gas Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 150000001247 metal acetylides Chemical class 0.000 description 2
- 238000010310 metallurgical process Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000004848 polyfunctional curative Substances 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000010456 wollastonite Substances 0.000 description 2
- 229910052882 wollastonite Inorganic materials 0.000 description 2
- 241000273930 Brevoortia tyrannus Species 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000037406 food intake Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000012432 intermediate storage Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/2406—Binding; Briquetting ; Granulating pelletizing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/52—Manufacture of steel in electric furnaces
- C21C5/5264—Manufacture of alloyed steels including ferro-alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/16—Sintering; Agglomerating
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/06—Dry methods smelting of sulfides or formation of mattes by carbides or the like
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C27/00—Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00
- C22C27/06—Alloys based on chromium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Carbon And Carbon Compounds (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2011/070134 WO2013071956A1 (en) | 2011-11-15 | 2011-11-15 | Metallurgical composition for the manufacture of ferrochrome |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EA201490607A1 EA201490607A1 (ru) | 2014-11-28 |
| EA025907B1 true EA025907B1 (ru) | 2017-02-28 |
Family
ID=45047747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EA201490607A EA025907B1 (ru) | 2011-11-15 | 2011-11-15 | Металлургический состав для производства феррохрома |
Country Status (13)
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018011467A1 (en) * | 2016-07-11 | 2018-01-18 | Outotec (Finland) Oy | Process for manufacturing ferrochromium alloy with desired content of manganese, nickel and molybdenum |
| FI128814B (fi) * | 2016-12-30 | 2020-12-31 | Outotec Finland Oy | Menetelmä nikkeliä sisältävien kovetettujen kromiittipellettien tuottamiseksi, menetelmä ferrokrominikkeliseoksen tuottamiseksi ja kovetettu kromiittipelletti |
| US11969786B1 (en) * | 2020-09-23 | 2024-04-30 | Envergex LLC | Chemical looping carrier compositions, binders, and related methods |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4576637A (en) * | 1982-02-18 | 1986-03-18 | Vasipari Kutato Es Fejleszto Vallalat | Process for preparing silicon-base complex ferrous alloys |
| EP1274870B1 (en) * | 2000-04-19 | 2005-01-19 | Maxred (Proprietary) Limited | Ferroalloy production |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US906854A (en) * | 1906-06-19 | 1908-12-15 | Electro Metallurg Co | Process of reducing metallic oxids. |
| US4659374A (en) * | 1985-06-14 | 1987-04-21 | Dow Corning Corporation | Mixed binder systems for agglomerates |
| CN1037917C (zh) * | 1993-03-02 | 1998-04-01 | 锦州铁合金厂 | 粉铬矿还原性烧结造块冶炼铬铁合金工艺 |
| CN100352950C (zh) | 2004-12-08 | 2007-12-05 | 涟源钢铁集团有限公司 | 一种耐候钢的冶炼工艺 |
| CN1847440A (zh) * | 2006-04-25 | 2006-10-18 | 吴江市东大铸造有限公司 | 镍铬铁合金及生产方法 |
| CN101538629A (zh) * | 2009-02-05 | 2009-09-23 | 丁家伟 | 用粉铬矿冶炼铬铁合金及含铬铁水工艺及设备 |
| CN101701312B (zh) * | 2009-05-26 | 2012-03-21 | 山西太钢不锈钢股份有限公司 | 用铬矿粉和红土矿为原料冶炼不锈钢母液的方法 |
| CN101705333B (zh) | 2009-11-28 | 2011-12-28 | 山西太钢不锈钢股份有限公司 | 不锈钢除尘灰的还原利用方法 |
-
2011
- 2011-11-15 IN IN2589CHN2014 patent/IN2014CN02589A/en unknown
- 2011-11-15 AU AU2011381318A patent/AU2011381318B2/en not_active Ceased
- 2011-11-15 EA EA201490607A patent/EA025907B1/ru not_active IP Right Cessation
- 2011-11-15 CA CA2850869A patent/CA2850869C/en not_active Expired - Fee Related
- 2011-11-15 EP EP11788411.4A patent/EP2780484B1/en not_active Not-in-force
- 2011-11-15 CN CN201180074859.1A patent/CN103946400B/zh not_active Expired - Fee Related
- 2011-11-15 KR KR1020147013203A patent/KR101541669B1/ko not_active Expired - Fee Related
- 2011-11-15 BR BR112014011689A patent/BR112014011689A2/pt not_active Application Discontinuation
- 2011-11-15 US US14/358,619 patent/US9359655B2/en not_active Expired - Fee Related
- 2011-11-15 WO PCT/EP2011/070134 patent/WO2013071956A1/en active Application Filing
-
2012
- 2012-11-12 SA SA112331002A patent/SA112331002B1/ar unknown
- 2012-11-15 TW TW101142572A patent/TWI477611B/zh not_active IP Right Cessation
-
2014
- 2014-06-13 ZA ZA2014/04386A patent/ZA201404386B/en unknown
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4576637A (en) * | 1982-02-18 | 1986-03-18 | Vasipari Kutato Es Fejleszto Vallalat | Process for preparing silicon-base complex ferrous alloys |
| EP1274870B1 (en) * | 2000-04-19 | 2005-01-19 | Maxred (Proprietary) Limited | Ferroalloy production |
Non-Patent Citations (1)
| Title |
|---|
| ABDULABEKOV E E, ET AL.: "PRODUCTION OF CHROMITE PELLETS FOR SMELTING HIGH-CARBON FERROCHROMIUM", STEEL IN TRANSLATION., ALLERTON PRESS, NEW YORK, NY., US, vol. 33, no. 05, 1 January 2003 (2003-01-01), US, pages 25 - 28, XP001211624, ISSN: 0967-0912 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US9359655B2 (en) | 2016-06-07 |
| EP2780484B1 (en) | 2017-03-01 |
| IN2014CN02589A (enrdf_load_stackoverflow) | 2015-06-26 |
| US20150013496A1 (en) | 2015-01-15 |
| AU2011381318B2 (en) | 2015-08-20 |
| CA2850869A1 (en) | 2013-05-23 |
| ZA201404386B (en) | 2015-09-30 |
| TW201329247A (zh) | 2013-07-16 |
| KR20140137337A (ko) | 2014-12-02 |
| BR112014011689A2 (pt) | 2017-05-30 |
| WO2013071956A1 (en) | 2013-05-23 |
| TWI477611B (zh) | 2015-03-21 |
| CN103946400B (zh) | 2017-06-13 |
| EA201490607A1 (ru) | 2014-11-28 |
| CN103946400A (zh) | 2014-07-23 |
| SA112331002B1 (ar) | 2015-07-22 |
| AU2011381318A1 (en) | 2014-04-17 |
| KR101541669B1 (ko) | 2015-08-03 |
| CA2850869C (en) | 2016-08-23 |
| EP2780484A1 (en) | 2014-09-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5699567B2 (ja) | 焼結鉱の製造方法 | |
| JPH0121855B2 (enrdf_load_stackoverflow) | ||
| CN104593585A (zh) | 铬矿球团预还原直供矿热炉的系统及预还原直供方法 | |
| KR101492783B1 (ko) | 페로크롬의 제조 방법 | |
| JP6421666B2 (ja) | 焼結鉱の製造方法 | |
| KR101234388B1 (ko) | 환원철의 제조 방법 | |
| EA025907B1 (ru) | Металлургический состав для производства феррохрома | |
| UA119756C2 (uk) | Спосіб отримання котунів марганцевої руди | |
| JP6333770B2 (ja) | フェロニッケルの製造方法 | |
| JP3395554B2 (ja) | 焼結鉱の製造方法 | |
| JP4351555B2 (ja) | 高炉用高反応性コークス及びその製造方法 | |
| US4082540A (en) | Material for sintering emitting a lesser amount of nitrogen oxide and a method for manufacturing the same | |
| BRPI0505675B1 (pt) | Método para produção de um aglomerado sinterizado para produção de ferro. |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | Lapse of a eurasian patent due to non-payment of renewal fees within the time limit in the following designated state(s) |
Designated state(s): AM AZ BY KG MD TJ TM |
|
| MM4A | Lapse of a eurasian patent due to non-payment of renewal fees within the time limit in the following designated state(s) |
Designated state(s): RU |